Abstract: An electronic device is provided. The electronic device includes a metal housing, a substrate and a radiating element. The metal housing is provided with a slot, and the slot includes an opening end and a closed end. The slot has a first wall of the slot and a second wall of the slot opposite to each other at the position of the opening end. The first wall of the slot is located between the second wall of the slot and the closed end. There is a predetermined distance between the first wall of the slot and the closed end. A feeding portion of the radiating element is connected to a feeding element and a signal is fed through the feeding element, so that the radiating element is used for exciting the metal housing to generate at least one resonance frequency.

Abstract: There is provided a wireless apparatus with which a communication range may be prevented from being reduced even in a case where the height of the apparatus is restricted. The wireless apparatus includes an antenna device configured by a substrate including a substrate ground and an antenna element provided on the substrate, and a conductor formed into a sideways U-shape. The conductor includes an upper section and a lower section that are disposed along a ground plane and vertically relative to each other, and a middle section that is disposed substantially perpendicular to the ground plane, between one end of the upper section and one end of the lower section. The conductor is disposed such that the upper section, the lower section, and the middle section thereof are near an upper side section, a lower side section, and a lateral side section of the antenna device, respectively.

Abstract: An antenna structure includes a ground element, a first radiation element, a second radiation element, a dielectric substrate, a first feeding element, a second feeding element, a third feeding element, and a fourth radiation element. The dielectric substrate has a first surface and a second surface. The first radiation element is disposed on the first surface. The second radiation element is adjacent to the first radiation element, and is separate from the first radiation element. The first feeding element has a first feeding port, and is coupled to the first radiation element. The second feeding element has a second feeding port, and is coupled to the first radiation element. The third feeding element has a third feeding port, and is coupled to the first radiation element. The fourth feeding element has a fourth feeding port, and is coupled to the first radiation element.

Abstract: A radiator assembly for a base station antenna includes two dipoles arranged in a cross-over manner, each dipole including two dipole arms, and two feeding lines, each feeding line being associated with a respective one of the dipoles. Each dipole arm is integrally formed of sheet metal, and includes a radiating surface and a leg projecting from the radiating surface at an angle with the radiating surface, where the leg is electrically grounded.

Abstract: An electronic package and a method of manufacturing an electronic package are provided. The electronic package includes a carrier, an antenna substrate, and an electronic component. The carrier has a first surface and a second surface. The antenna substrate includes a resonant cavity and is disposed over the first surface. The antenna substrate is closer to the first surface than the second surface of the carrier. The electronic component is disposed between the antenna substrate and the second surface of the carrier.

Abstract: An antenna and radiation unit thereof, and balun structure of radiation unit are disclosed. The radiation unit has two dipoles belonging to a same polarization and two feeding components respectively feeding the two dipoles. One end of each of the two feeding components is electrically connected to its corresponding dipole, and the other end of each of the two feeding components is combined through a same physical combining port inherent in the radiation unit. By arranging a combining port inherent to the radiation unit and connecting it to a respective end of two feeding components connected to two dipoles of the same polarization, the signals of the two dipoles are divided/combined through the combining port.

Abstract: An antenna includes: a dielectric layer; a reference electrode layer on a first surface of the dielectric layer and with a slot therein; radiation structure on a second surface of the dielectric layer. The radiation structure includes a plurality of radiation parts spaced apart from each other, each of which includes radiation elements spaced apart from each other. The plurality of radiation parts in each radiation structure include first radiation part and a second radiation part; and a first microstrip line and a second microstrip line are on the second surface. The first microstrip line is configured to feed power to the radiation elements in the first radiation part, and the second microstrip line is configured to feed power to the radiation elements in the second radiation part. The first microstrip line has a feed direction different from that of the second microstrip line.

Abstract: Stub conductors are disposed so as to surround an outer periphery of a patch conductor and be spaced from the patch conductor with a gap positioned between the stub conductors and the patch conductor.

Abstract: The design of a Global Navigation Satellite System (GNSS) antenna requires consideration of a range of characteristics including, for example, the ability for tracking satellites at low elevation, phase centre variation (PCV), antenna efficiency and impedance, axial ratio and up-down ratio (UDR), antenna bandwidth, etc. whilst also providing a light weight, compact and robust form factor. For rover applications this becomes particularly important when the satellites being accessed may be at low elevations where prior art GNSS antenna exhibit poor performance. To address this a GNSS antenna is provided comprising a domed array of opposed metallized antenna elements which are indirectly coupled via a pair of dipoles to the feed network thereby avoiding the difficulties associated with direct electrical connections of feed circuits to antenna elements.

Abstract: Embodiments of this application disclose a common aperture antenna and a communication device. The common aperture antenna includes: a reflection panel and a low frequency antenna unit, a frequency selective panel, and a high frequency antenna unit that are disposed on the same side as the reflection panel and are arranged in sequence. In the direction perpendicular to the reflection panel, the distance between the high frequency antenna unit and the reflection panel is greater than the distance between the low frequency antenna unit and the reflection panel, the frequency selective panel is disposed between the high frequency antenna unit and the low frequency antenna unit, and the frequency selective panel is a reflection ground of the high frequency antenna unit and has a total reflection characteristic for the working frequency of the high frequency antenna unit.

Abstract: An antenna device includes a printed circuit board including a circuit configured to determine a position based on a navigation signal, and a dipole antenna element mounted on the printed circuit board and configured to receive the navigation signal. Further, the antenna device includes an L-shaped parasitic antenna element, wherein the dipole antenna element and a long-side element of the L-shaped parasitic antenna element are placed parallel to each other but at a position not in line with each other, and an end of a short-side element of the L-shaped antenna element is placed in close proximity to an end of the dipole antenna element.

Abstract: A vehicular radar sensing system includes a radar sensor disposed at a vehicle. The radar sensor includes a waveguide antenna and a printed circuit board (PCB) with an inboard side and an outboard side. A processor is disposed at the inboard side of the PCB and the waveguide antenna is disposed at the outboard side of the PCB. The waveguide antenna is partially disposed within a cavity at the outboard side of the PCB. Radio frequency signals are electrically communicated between the processor and the waveguide antenna through only a portion of the PCB. The waveguide antenna (i) guides the transmitted radio signals from the transmitter to the exterior environment and (ii) guides reflected radio signals from the exterior environment to the receiver.

Abstract: Systems and methods for operating an antenna with a tension cord network coupled to a plurality of anchor points of a perimeter hoop structure. The methods comprise: using the tension cord network to support a flexible antenna reflector surface such that a given shape of the flexible antenna reflector surface is provided; and allowing locations of the anchor points to change relative to the tension cord network while the antenna is in use. The flexible antenna reflector surface is held taut when the locations of the anchor points change relative to the tension cord network.

Abstract: An electronic device may be provided with a conductive housing sidewall and a phased antenna array that conveys radio-frequency signals at frequencies greater than 10 GHz. Each antenna in the array may radiate through a respective aperture in the sidewall. The antenna module may include a folded flexible printed circuit having a first portion and a second portion that extends from an end of the first portion and that is folded with respect to the first portion. The antennas in the phased antenna array may have antenna resonating elements that are distributed between the first and second portions. Forming the antenna module from a folded flexible printed circuit in this way may serve to minimize the thickness of the antenna module, thereby allowing the antenna module to fit between a ledge of the sidewall and a rear housing wall without occupying excessive space within the device.

Abstract: In an antenna, a first antenna element includes a first radiation conductor and a first feeder line. A second antenna element includes a second radiation conductor and a second feeder line. A second feeder line is coupled to the first feeder line such that a first component, which is a capacitance component or an inductance component, is dominant. A first coupler couples the first and second feeder lines such that a second component different from the first component is dominant. The first and second radiation conductors are arranged at interval of ½ or less of resonance wavelength. The second feeder line is coupled to the first radiation conductor such that a third component, which is the capacitance component or the inductance component, is dominant. The first coupling portion couples the first radiation conductor and the second feeder line such that a fourth component different from the third component is dominant.

Abstract: A planar conductive millimeter-wave lens includes: a planar conductive plate with a first surface and a second surface, wherein the first surface is parallel to the second surface; a plurality of openings from the first surface through the planar conductive plate to the second surface, where an axis of each opening is perpendicular to the first surface and the second surface. A size of each opening is a function of a position of said each opening on the planar conductive plate such that an insertion phase collectively imposed by the openings on an incident wave causes the incident wave to pass through the first surface and the planar conductive plate, exit from the second surface and to focus at a predetermined distance from the second surface.

Abstract: A structure includes: a first conductor that extends in a second direction; a second conductor that faces the first conductor in a first direction and that extends along the second direction; a third conductor configured to capacitively connect the first conductor and the second conductor; a fourth conductor that is electrically connected to the first conductor and the second conductor, and that extends along a first plane; and a first resist layer that covers the fourth conductor. The fourth conductor includes a plurality of first areas exposed to outside via a plurality of through holes of the first resist layer. Each of the first conductor and the second conductor includes one or more second areas. The first resist layer extends on the first conductor and the second conductor to cover the fourth conductor, excluding the second areas. The first areas and the second areas are arranged along the first plane.

Abstract: An electronic device is provided. The electronic device includes a housing including a first housing structure and a second housing structure, at least a portion of the first housing structure is formed with a metallic material to form at least one first antenna, and at least another portion of the first housing structure is formed with a nonmetallic material to isolate the at least one first antenna, and at least a portion of the second housing structure is formed with a metallic material to form at least one second antenna, and at least another portion of the second housing structure is formed with a nonmetallic material to isolate the at least one second antenna.

Abstract: A method of manufacturing an electromagnetic wave reflecting structure includes the steps of presetting an operating frequency, a reflected wave pointing angle, an incident wave pointing angle, and an incident distance of an electromagnetic wave; obtaining an electromagnetic wave reflecting structure phase distribution of an electromagnetic wave reflecting structure according to the operating frequency, the reflected wave pointing angle, the incident wave pointing angle, and the incident distance; and arranging a plurality of reflecting elements on a substrate according to the electromagnetic wave reflecting structure phase distribution and a reflecting element phase curve of any one of the reflecting elements at the operating frequency.

Abstract: Provided are embodiments for a system and a method for operating an omnidirectional antenna. Embodiments include operating a first antenna that includes a first input configured to receive an input signal, a plurality of subarrays configured for transmitting and receiving signals, and a ground plane of the first antenna. Embodiments also include operating a second antenna coupled to the first antenna that includes a second input configured to receive an input signal, a plurality of arms configured for transmitting and receiving signals, a ground plane of the second antenna, and coupling the ground plane of the first antenna and the ground plane of a second antenna.

Abstract: Certain aspects of the present disclosure to techniques for sidelink re-discovery without repeating beamforming in millimeter wave (e.g., Frequency Range 2) bands. For example, a Tx UE may complete a first beam training with a Rx UE. The Tx UE may generate a discovery message that includes at least one of: an indication of a beam training reference signal (BT-RS) sequence index of the first beam training; an indication of a timer for changing the BT-RS sequence; or an indication of a second BT-RS sequence to be used by the Tx UE before an expiration of the timer. The second BT-RS sequence may be indicated as an index to a set of BT-RS sequences including the BT-RS sequence associated with the first beam training. The Tx may transmit the generated discovery message to the Rx UE.

Abstract: An antenna assembly includes a first magnetic substrate having a first surface and a second surface opposite from the first surface. One or more antenna elements are disposed on the first surface of the first magnetic substrate. A microstrip feed line is disposed on the second surface of the first magnetic substrate. A second magnetic substrate is secured to the first magnetic substrate. The second magnetic substrate includes one or more cavities aligned with the one or more antenna elements and the microstrip feed line.

Abstract: A base station antenna (BSA) includes a reflector having a main reflector surface thereon, which extends between first and second sidewalls thereof. First and second choke-within-a-choke assemblies are provided on first and second sides of the reflector, respectively. The first choke-within-a-choke assembly includes: a first relatively low-band choke defined on one side thereof by the first sidewall of the reflector, and a first relatively high-band choke contacting on two sides thereof a rear surface of the reflector and an inner surface of the first sidewall. The second choke-within-a-choke assembly includes: a second relatively low-band choke defined on one side thereof by the second sidewall of the reflector, and a second relatively high-band choke contacting on two sides thereof the rear surface of the reflector and an inner surface of the second sidewall.

Abstract: As a non-limiting example, various aspects of this disclosure provide embodiments of antenna apparatus using monocone antennas for wireless communication.

Abstract: An antenna unit includes a plate-shaped dielectric substrate, as well as an antenna element and a stub element. The dielectric substrate has a first edge extending along a longitudinal direction of the dielectric substrate and a second edge extending along the longitudinal direction of the dielectric substrate, and the second edge is opposite to the first edge. The antenna element is disposed along the longitudinal direction of the dielectric substrate. The Antenna element has a first end containing a feedpoint and a second end containing an open end. The stub element is disposed between a section of the antenna element having a predetermined length containing the first end of the antenna element and the first edge of the dielectric substrate along the longitudinal direction of the dielectric substrate. The stub element has a first end connected to a reference potential and a second end containing an open end.

Abstract: An antenna and a mobile terminal are provided. The antenna includes a plurality of antenna units arranged in an array, and each antenna unit includes a first radiating element and a second radiating element, where the first radiating element includes a first slot disposed on a metal layer, the second radiating element includes at least one radiating stub, and the first radiating element is coupled to the at least one radiating stub. In any two adjacent antenna units, a feeder of one antenna unit is connected to a first radiating element of the antenna unit, and a feeder of the other antenna unit is connected to a second radiating element of the antenna unit. In the technical solution, feeders of adjacent antenna units are directly connected to different first radiating elements and second radiating elements.

Abstract: A microstrip antenna array including: a thin substrate; two or more microstrip radiating patches placed on a first side of the substrate, each radiating patch including: an input port; a radiating patch width (WRP) extending in a longitudinal direction; a radiating patch length (LRP) extending in a transverse direction, wherein the transverse direction is perpendicular to the longitudinal direction, and wherein the longitudinal and transverse directions are in the plane of the radiating patch; a radiating patch transverse axis (TRP) along the midpoint of the radiating patch width; and a radiating patch longitudinal axis along the midpoint of the radiating patch length, wherein the two or more radiating patches are spaced in the longitudinal direction such that the radiating patch longitudinal axis of each radiating patch is aligned along a common longitudinal axis (C); and one or more parasitic patches placed on the first side of the substrate.

Abstract: Embodiments of this application disclose an integrated circuit and a terminal device, to resolve a problem that an existing dual-band antenna has a relatively small low-frequency band range and is difficult to meet use requirements. An antenna includes a bearer structure, a first radiation patch, a second radiation patch, and a radio frequency processing chip. The first radiation patch, the second radiation patch, and the radio frequency processing chip are separately placed on different layers of the bearer structure. A first feed line and a second feed line are disposed in the bearer structure. The radio frequency processing chip feeds the first radiation patch by using the first feed line. The radio frequency processing chip feeds the second radiation patch by using the second feed line.

Abstract: The combined antenna for satellite and terrestrial radio communications includes: a support structure (1); a “crossed dipole” compact broadband satellite antenna (10), in turn including a pair of dipoles (11,12), which extend from the support structure (1), and which are substantially perpendicular to each other and connected so as to be electrically out of phase. A broadband “monopole” antenna (50) for terrestrial communications is included, having a plurality of linear electric mass elements (52) extending radially from the support structure (1) to provide an electric mass surface (53), and a radiating arm (55) is also included extending from the support structure (1) away from the electric mass surface (53). The radiating arm (55) is arranged around the central column (2) and includes thread-like radiating elements (56); and the dipoles (11,12) further include one or more thread-like dipole elements (111,112), arranged to define a flattened configuration of the respective dipole (11,12).

Abstract: The disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. An electronic apparatus is provided. The electronic apparatus includes a printed circuit board (PCB), an antenna module mounted on a surface of the printed circuit board, and a radio frequency integrated circuit (RFIC) module mounted on another surface of the printed circuit. The printed circuit board includes a coaxial plated through-hole (PTH) electrically connected with the antenna module and the RFIC.

Abstract: A switchboard controller for a parasitic antenna array. The switchboard controller has an internal bias tee mounted within an RF-shielded enclosure. The internal bias tee has an RF port, a DC port, and an RF & DC port. The RF port is configured to be connected to a driven element of the parasitic array antenna, and the RF & DC port is configured to be connected to an RF and DC source. The switchboard controller also has a voltage regulator mounted within the enclosure and is electrically connected to the DC port. The switchboard controller also has a plurality of manual switches electrically connected to the voltage regulator, each switch operatively connected to a separate parasitic element of the parasitic array antenna. The switches are mounted on the back side of a frame in a 2-dimensional pattern that is similar to the physical layout of the parasitic elements.

Abstract: A system for communicating with a wireless device including a base including a front surface; a plurality of communication coils disposed on the front surface and arranged in a matrix, the coils being tuned to a near-field communication frequency; a selector coupled to the coils; at least one memory storing instructions; and at least one processor coupled to the selector and executing the instructions to perform operations. The operations include at least receiving a plurality of feedback signals associated with the coils; identifying a selected one of the coils associated with a strongest one of the feedback signals; and causing the selector to couple the selected coil with a wireless communication module.

Abstract: The present disclosure relates to a multiple-input and multiple-output antenna apparatus, and particularly, includes a housing, a ray dome which is coupled to the top of one side of the housing in a longitudinal direction, and has an antenna assembly disposed between the ray dome and the housing, a PCB assembly which is disposed at the bottom of the antenna assembly, a top cooling part which is coupled to the top of the other side of the housing in the longitudinal direction, has a battery and an FPGA assembly disposed between the top cooling part and the housing, and dissipates upward the heat discharged from the FPGA assembly, and a side cooling part which is coupled to protrude to one side in a width direction between the housing and the top cooling part and the other side in the width direction therebetween, and moves and dissipates the heat generated from the FPGA assembly to one side and the other side of the housing in the width direction, thereby improving cooling performance.

Abstract: A chip antenna module array includes a connection member and chip antenna modules mounted on the connection member. Each chip antenna module includes: a first patch antenna dielectric layer; a feed via extending through the first patch antenna dielectric layer; and a patch antenna pattern disposed on an upper surface of the first patch antenna dielectric layer and configured to be fed from the feed via. At least one chip antenna module includes: a ground pattern disposed on a lower surface of the first patch antenna dielectric layer; a chip-antenna feed line including a second part disposed on a lower surface of the ground pattern, and electrically connecting a connection member feed line to the feed via; a first feed line dielectric layer disposed on a lower surface of the second part; and a solder layer disposed on a lower surface of the first feed line dielectric layer.

Abstract: In one or more embodiments, a high impedance surface (HIS) apparatus comprises a core; a first set of conducting pads, where a first side of the first set of conducting pads is connected to a first side of the core; and a second set of conducting pads, where a first side of the second set of conducting pads is connected to a second side of the core. The apparatus further comprises a plurality of chip inductors, where at least a portion of the chip inductors are connected to a second side of the first set of conducting pads; and a plurality of chip capacitors, where at least a portion of the chip capacitors are connected to a second side of the second set of conducting pads.

Abstract: The present invention provides a MIMO antenna. The MIMO antenna includes a regular octagonal substrate and eight antenna components with a same structure arranged along eight edges of the regular octagonal substrate, and the eight antenna components are distributed in an annular array. The present disclosure further provides a terminal applying with the MIMO antenna. The eight antenna components in the MIMO antenna provided by the present disclosure are distributed in an annular array, so that an area occupied by the MIMO antenna in the terminal is greatly reduced; and moreover, the antenna components have good isolation therebetween and are simple in form, and the MIMO antenna has a higher bandwidth.

Abstract: The disclosure presents a method and a hearing device comprising a first portion adapted for being arranged behind an ear of a user for providing a signal, an output transducer for converting the signal to an acoustic output, a coupling element coupling to the first portion, an antenna comprising an external antenna arranged at least externally to the first portion and an internal parasitic element, a feeding unit configured to supply a current to the external antenna, and the feeding unit is further configured to supply the current to the internal parasitic element via a wireless coupling, a wireless interface for receiving and/or transmitting data by means of the antenna, and wherein the coupling element comprises the external antenna.

Abstract: An antenna unit, a MIMO antenna and a handheld device. The antenna unit includes a feeder and a radiator, wherein the radiator is in a 90°-rotated U shape and includes a first horizontal part, a first vertical part and a second horizontal part, two ends of the first vertical part are respectively connected to the first horizontal part and the second horizontal part; the feeder is located in the U shape and includes a second vertical part, a third horizontal part and a third vertical part, two ends of the third horizontal part are respectively connected to the second vertical part and the third vertical part, and the second vertical part and the third vertical part are located on different sides of the third horizontal part. The MIMO antenna has an ultra wideband.

Abstract: A system includes a housing; one or more antennas mounted on the housing; and a processor to control a directionality of the antennas in communication with a predetermined target using 5G protocols.

Abstract: A system, in a programmable active reflector (AR) device associated with a first radio frequency (RF) device and a second RF device, receives a request and associated metadata from the second RF device via a first antenna array. Based on the received request and associated metadata, one or more antenna control signals are received from the first RF device. The programmable AR device is dynamically selected and controlled by the first RF device based on a set of criteria. A controlled plurality of RF signals is transmitted, via a second antenna array, to the second RF device within a transmission range of the programmable AR device based on the associated metadata. The controlled plurality of RF signals are cancelled at the second RF device based on the associated metadata.

Abstract: A system, in a programmable active reflector (AR) device associated with a first radio frequency (RF) device and a second RF device, receives a request and associated metadata from the second RF device via a first antenna array. Based on the received request and associated metadata, one or more antenna control signals are received from the first RF device. The programmable AR device is dynamically selected and controlled by the first RF device based on a set of criteria. A controlled plurality of RF signals is transmitted, via a second antenna array, to the second RF device within a transmission range of the programmable AR device based on the associated metadata. The controlled plurality of RF signals are cancelled at the second RF device based on the associated metadata.

Abstract: An antenna module includes a connection member, an integrated circuit (IC) on a first surface thereof, and an antenna package on a second surface thereof. The connection member includes a wiring layer and an insulating layer. The IC is electrically connected to the wiring layer. The antenna package includes first antenna members and feed vias each electrically connected to a corresponding one of the first antenna members and a corresponding wire of the wiring layer. A feed line is electrically connected to a wire of the wiring layer and extends in a side direction of the second surface, a second antenna member is electrically connected to the feed line and is configured to transmit and/or receive an RF signal in the side direction, and a director member is spaced apart from the second antenna member in the side direction and has an inside boundary oblique to the second antenna member.

Abstract: A system, in a programmable active reflector (AR) device associated with a first radio frequency (RF) device and a second RF device, receives a request and associated metadata from the second RF device via a first antenna array. Based on the received request and associated metadata, one or more antenna control signals are received from the first RF device. The programmable AR device is dynamically selected and controlled by the first RF device based on a set of criteria. A controlled plurality of RF signals is transmitted, via a second antenna array, to the second RF device within a transmission range of the programmable AR device based on the associated metadata. The controlled plurality of RF signals are cancelled at the second RF device based on the associated metadata.

Abstract: An antenna structure includes a substrate, a vertical radiator, a reflective structure and a horizontal metal branch. The vertical radiator is in the substrate. The reflective structure is laterally disposed external to the vertical radiator. The horizontal metal branch is coupled to the reflective structure.

Abstract: An antenna system for use with a media device is provided. The antenna system includes a multi-mode active antenna configurable to operate in a plurality of modes. Each mode of the plurality of has a distinct radiation pattern. The antenna system includes a supplemental tuner that is separate from a primary tuner associated with the media device. The antenna system includes a switching device movable between at least two positions to selectively couple the active antenna to the supplemental tuner. When the switching device is in a first position, the active antenna is coupled to the supplemental tuner. When the switching device is in a second position, the active antenna is coupled to the media device.

Abstract: A microwave antenna coupling apparatus forming an eWLB package, comprises an antenna coupling element comprising a coupling unit, a coupling feed line arranged on a first surface of the coupling unit and an internal coupling component to provide signal coupling between the coupling feed line and the second surface of the coupling unit, wherein the antenna coupling element is arranged within the mold layer separate from the semiconductor element and such that an outer surface of the coupling feed line is not covered by mold material. Different multi-layer antenna structures can be placed on top of eWLB package. By this type of integration Package-on-Package (PoP) antenna are constructed. The elements can be integrated by a standard pick and place process.

Abstract: A system includes a housing; one or more antennas mounted on the housing; and a processor to control a directionality of the antennas in communication with a predetermined target using 5G protocols.

Abstract: A spatial cognitive radar system, method of assembling the radar, and method of selecting antenna elements in the radar are described. The system includes a phased array of a plurality of antenna elements and a plurality of receiver channels, the plurality of receiver channels being a value greater than one and less than a number of the plurality of antenna elements. The system also includes a processor to determine a subset of the plurality of antenna elements, equal in number to the plurality of receiver channels, to be used in transmitting or receiving with the spatial cognitive radar system.

Abstract: Exemplary embodiments, the present disclosure are related to an antenna system including radiating elements and reflectors. The reflectors can be disposed with respect to the radiating elements to reflect radiation from the radiating elements to generate a coverage area that exceeds the coverage area generated by the radiating elements without the reflectors.

Abstract: A wireless network device with a communication assembly, which is rotatable for better signal strength, includes a power supply module and the communication assembly. The communication assembly is powered by the power supply module. The power supply module includes a base and a first electrode unit. The first electrode unit is positioned in the base. The first electrode unit partially extends out of the base. The communication assembly includes a case and a second electrode unit. The second electrode unit is positioned in the case. The second electrode unit partially extends out of the case towards the first electrode unit. The case is detachably installed on the base. The case can be rotated relative to the base. The second electrode unit is electrically connected to the first electrode unit.